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- W2091935665 abstract "The Zn-triflate molecules loaded (5–30 mol%) in mesoporous SBA-15 silicate exhibited considerably higher catalytic activity for liquid-phase Friedel–Crafts (FC) acylation of naphthalene with p-toluoyl chloride, as compared to the corresponding triflates of La, Ce and Y. In situ FTIR studies revealed that the triflate molecules occluded in the channels of SBA-15 may cause severe perturbation of surface hydroxyl groups, without undergoing an electronic binding. The metal cations of the triflate molecules, on the other hand, participated in direct bonding of the reactant molecules and also helped in the formation of some Brönsted type surface acid sites. This article discusses the role of the acid sites generated on occlusion of metal triflates in SBA-15, as monitored by using NH3-TPD and pyridine-IR spectroscopy, in the Friedel–Crafts acylation of naphthalene." @default.
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- W2091935665 date "2010-01-15" @default.
- W2091935665 modified "2023-10-17" @default.
- W2091935665 title "Nature of the acid sites in the metal triflates immobilized in SBA-15 and their role in the Friedel–Crafts acylation of naphthalene" @default.
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- W2091935665 doi "https://doi.org/10.1016/j.apcata.2009.10.021" @default.
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